Seal locking device



Jufly 24, 11923.

E. TYDEN SEAL LOCKING DEVICE Filed March 23 1921 Patented July 24, 1923.

UNITED STATES "EMIL 'I'YDEN', OF EVANSTON, ILLINOIS.

SEAL LOCKING DEVICE.

Application filed March 23, 1921.

' T all whom it my concern:

' vide an improved means for sealing a securing device, the same being shown embodied in a bag tie securing device or look, but not being limited to such embodiment. It consists in the elements and features of construction shown and described as indicated in the claims.

In the drawings: 1

Figurel is a perspective view of a bag tie securing device equipped with this invention. a

Figure 2 is a longitudinal section, as at the line, 22, on'Figure 1. l a

Figure 3 is a section atthe line, '3'3, on Figur'e2.

Figure 4 is a perspectiveview of the sealing strip employed as part of the complete sealing device as 'shown'in the other figure.

'In respect to this construction for securing the bag tie, the device shown in the drawings is substantially identical with the bag tie securing device which is the subject of my" co-pending application, Serial No. 435,404, filed January 6, 1921,and a brief description of this structure will sufiice here. y

The tie securing device consists of a'base member and a latch B, pivoted to-the base for swinging into engagement with a hood, B on the latter, at the opposite end of the base from that at which the latch is pivoted thereto, anda cord gripper, C, lodged in the base adjacent the'hoodend of the latter, the

base having at that end cord apertures, a an d b and the gripper having notches, c, c, positioned for riding on the, cord at points inward from thecord apertures, a and b, the latch and hood having co-operating cam features for causing'the latch to clamp the gripper onto the cold when the latch end is forcedunder'-theho0d.- The hood has in its outer end wall a sealaperture, o for a seal- 'ing strip, E; and the latch at the end which enters the hood has a seal catch chamber, B ,in whose opposite end walls are formed seal'apertures, b and 6 which at the Cord Serial No. 454,758.

clamping position of the latch,that is when it is fully entered under the hood,- are aligned with the seal aperture, (L The sealing strip, E, is made of sheet material, preferably metal, as commercial tin, though other material such as celluloid may be used. It consists of a straight narrow strip having its width reduced over a portion of its length fromone end back to shoulders, 6 6 the full width part, E from said shoulders toward the other end being of a width to enter the seal catch chamber, B through the aperture, 6 and emerge through the aperture, 6 The narrower part, E of the sealing strip is of a width to pass through the aperture, a which is too narrow to admit the wider part, E of the sealing strip. Said wider part of the sealing strip has struck from opposite lateral marginal portions two spring fingers, E E, which are sprung out of the plane of the strip at opposite directions, as seen in Figure 2. The distance of the free ends of the spring fingers from the shoulders, e e, is less than the distance from the inner side of the apertured end wall of the hood to the inner side of the opposite end wall ofthe seal catch chamber by an amount at least as great as the thickness of said apertured end wall of the hood. The sealing strip is eX-- tended beyond the free end of the spring catch fingers, E for a length suflicient to cause it to protrude outside the seal catch chamber as seen in Figure 1, far enough to be grasped by the fingers of the operator for manipulating the seal as hereinafter explained. The narrower part. E of the sealing strip is weakened to facilitate its breaking and to insure its breaking at the proper point by an aperture, 6 a distance from the shoulders, E substantially the amount of the thickness of the apertured end wall of the hood, so that the sealing strip may be readily broken by an authorized person bending it back and forth at the point at which it emerges from the hood.

The operation of the device may be understood from the foregoing description to be as follows:

The latch being swung into cord-securing position under the hood, the sealing strip is I lOO ing endfbeinggrasped by the operator, will be pulled through until the spring catch fingers-sprung back into the plane of the strip in order to pass through the -,aperture entered fully into the spring catch chamber and spring out into engagement with saidv Wall; and at this position the shoulder, 6

of the sealing strip preventing the strip.

, Withthe springcatch chamber and-prevents the latch from being swung aside from under the hood. When an unauthorized person breaks the seal at the weakened point just outside the hood as above explained, the oppositely. protruding end of the strip may be grasped by the operator and the'strip pulledback to withdraw the severed endfout 01f engagement with the aperture, of, of the hood; and;thereupon the latch maybe swung aside, releasing the cord from the gripper. The, operator inay' now thrust the remnant ofthe se alout of the seal; catch chamber by pushing on the end' which protrudes out through the aperture, 6 and the device is thenready form-latching and sealing.

1.. In combination with' a permanent securing device designed to be sealed in locked positionand having for that purpose a seal catch chamber having apertures in two oppositewalls-for-a sealing strip to be'inserted entirely through the chamber, and a sealing st-ripadap'ted tobe so inserted, and adapted to be rupturedoutSide the catch chamber at the side thereof through which it is entered, the casing and the striphavi'ng co-operating a spring finger and acatch shoulder adapted for engagement against withdrawal from the strip in the direction from which it enters the, chamber.

2;; In' the construction defined in claim 1 foregoing, two spring fingers oblique to the plan'ejof the strip atopposite sides thereof each adapted for co-operation in the same direction with an engaging shoulder.

3. In a permanent securing device designed to be sealed in locked position, in combination with two parts pivoted together 'Eorturning relatively to effect securement, one of said parts having a seal-catch chamber and the other having a hood into which said chamber is entered at securing position of said two parts; the seal-catch chamber in the hood having apertures which are aligned at said securing position for the insertion of a sealing strip through the chamber and the hood, a sealing strip adapted to be so inserted. the strip and the chamber having co- 'oper'ating a spring finger and a catch shoulder adapted for engagement against withdrawal of the strip in the direction from which it enters the chamber.

l 4. In a permanent securing device designed to be sealed in lockedposition, combination with two parts pivoted tpgether for turning relatively to efi'e'ct a seourement, one of said parts having a seal-catch chamber andthe other having a hood into which said chamber isentered atsecuring position of said two parts, the chamber and the hood having apertures aligned at securing position for the insertion of a sealing strip through the chamber; a sealing strip adapted to be so inserted having a shoulder at which it is widened beyond the dimension of the hood aperture, whereby itis prevented from being drawn entirely, through the chamber, andbeing weakened-for. break? ing at a transverse line at a distance beyond the shoulder at. least equal to the thickness of the 'apertured wall of the hood; co-operating means on the strip and the chamber wall for preventing the withdrawal of. the strip in the' direction from which it enters the chamber, said means being relativelypositioned onthe strip and chamber wall. to permit the reversed or withdrawing movement of the strip equal to the distance from the shoulder to' the breaking line of the strip.

5.. In combination with: a permanent securing device designedto be sealed in locked position, in combination with two partspi-voted together for turning relativelv to efi'ect asecurement, one"ofsaidiparts.having a sealcatch chamber and the other having a hood into which said chamber is entered atsecuring position of said two parts; the se-al catch chamber and the hood having apertures which are aligned at said securing position for the insertion of'asealin'g strip through the chamber and the hood, a sealing strip having springfcatch fingers normallysprung out of the plane, of the strip and adapted to yield back toward said plate for entering through the seal apertures of; saidjchamber; the strip being weakened for breaking at a transverse lineat a distance back'from the end, of said spring fingers less than the distance from the outer side of the hood to the inner side of the remote end of the chamber by an amount at least as great as the thickness of the apertured wall of the hood.

6. In the construction defined in claim I. foregoing, the spring fingers being formed by striking the materialin opposite directions from the planeof the strip along opposite edges of said strip. H l f 7. In the construction" defined in claim 1, foregoing, the spring strip being reduced in width at"aportion of its length, the portion which engaged in the seal-catch chamber being unreduced forming shoulders facing, in the direction of the reduced portion, the seal aperture of the hood being narrower than the unreduced portion of the seal and adapted to admit the reduced portion,

whereby the shoulders are stopped against l ture in the adjacent end of the chamber being of the full unreduced Width of the seal strip.

8. In the construction defined in claim 1 foregoing, the sealing strip being reduced in width at a portion of its length, the portion which is engaged in the seal-catch chamber being unreduced, the shoulders facing in the direction of the reduced portion, the seal aperture of the hood being narrower than the unreduced portion of the seal and adapted to admit the reduced portion, whereby the shoulders are stopped against the apertured end of the hood; the seal aperture in the adjacent end of the chamber being of the full unreduced width of the seal strip, said seal strip being extended in length beyond the spring fingers for projecting out through the opposite end of the seal aperture of the chamber and thereby accessible for retracting the seal after rupture to bring the severed end within the hood and for thrusting the seal remnant out of the chamber.

In testimony whereof, I have hereunto set my hand at Chicago, Illinois, this 21st day of March, 1921.

EMIL TYDEN. 

